Cap



FIG. 1 is a perspective view of a cap;

FIG. 2 is a front elevational view thereof, the right side, rear, and left side elevational views being identical;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines shown in the drawing views are included for the purpose of showing environmental structure that forms no part of the claimed design. 

The ornamental design for a cap, as shown and described. 